The sides of a triangle are 12 inches, 15 inches, and 8 inches. Does the triangle contain a right angle?No, the sides of 8 inches and 12 inches do not add up to 15 inches.No, the sides of 8 inches and 12 inches squared and added together does not equal the side of 15 inches squared.Yes, the sides of 8 inches and 12 inches squared and added together equal the side of 15 inches squared.Yes, the sides of 8 inches and 12 inches are less than 15 inches.